Resilient wheel for carriages.



c. DOMINICUS, jR.

RESILIENT WHEEL FOR CARRIAGES.

APPLICATION FILED MAR. 20. 1911.

1 2%5 @920 Patented Oct. 30, 1917.

conNELIs nominlons, JR, OFGOES, NET ERL NDS.

RESILIENT WHEEL non censuses.

Application filed March 20,

To all whom it may concern Be it known that I CORNELIS DoMINIoUs, J12, mechanician, a subject of the Kingdom of the Netherlands, residing at Goes, Netherlands. Nieuwstraat 192, have invented a new anduseful Improvement in or- Relating to Resilient Wheels for Carriages, of which the following is a specification.

It is a well known fact that the reason for the majority of resilient wheels proving impractical, is due to the fact that when in operation instead of all the springs with which the wheel is provided taking up all the shocks caused by unevenness in the road and weight of the chassis above them, only two of the springs are simultaneously operated, to wit: the spring situated at the point where the wheel is touching the road and the spring diametrically opposite.

This invention then aims to overcome the aforementioned objection and provide a practical wheel which will produce a maximum cushioning effect by means of disposing a certain portion of the strain or weight over all of the resilient members simultaneously.

In the accompanying drawings I have illustrated my invention wherein:

Figure 1 is a side elevation, showing cer tain portions in sections.

Fig. 2 is a half cross-sectional view through the wheel.

Fig. 3 is a detailed view of the tension adjusting mechanism, as well as disclosing one of the forms of the construction allowing of the swinging of the piston rods within the casing.

Fig. 4 is an enlarged view partly in section of my device in operation, showing my preferred form of connecting the actuating rods with the pistons, and

Fig. 5 discloses modifications A and B showing two other-forms of connection between these parts. 7

Referring more particularly to the drawings, it willbe seen that the wheel is composed of rimslOand 1 respectively. The innor rim 1 is preferably made of wood having extending around its outer circumference an iron band 2. provided withslots-2 whose function will be hereinafter more particularly lescribed. The rim 1 is connected to the hub 4 by means of the spokes 3. in the usual manner sufficient space being'left between said spokes to accommodate casings 5, each havin seating against a shoulder in the rim 1, and

Specification of Letters Patent.

an enlarged portion 5 which 1917. Serial No. 156,189.

having its outer end engaged by the under side of the band 2, is so locked in place and prevented from moving withrespect to the rim 1. Referring more particularly to the sections disclosed in Figs. 1 and 41, it will be seen that the casingpractically amounts to cylinders having pistons 12 provided with actuating rods 9 whose outer ends are connected to the under side of the outer rim 10 by means of a pivot connection 11. Interposed in the casing, between the band 2 and the piston 12. is a spring 6, one end secured in any suitable manner to the upper end of the casing 5, although preferably the same projects into the enlarged portions 5. The opposite end of the spring 6 is wound and secured around a stud 7 preferably formed integral with the piston 12 and provided with an outstanding portion at its outer end, so that a groove or depression is formed which allows of a number of turns of the spring 6 therein. The piston is held in adjustable position by means of the nut 8 which is enveloped by the part 7 of the piston, with the exception' of its ends which project outwardly beyond the part 7, thus preventing any longitudinal movement of the latter with respect to the nut 8. This nut is provided with an interiorly screw threaded opening which engages screw threads formed upon the end of the rod 9 and a second nut may be provided, below the first named one, to prevent turning of this nut. It will be understood that I may make the nut S of smaller diameter, thus permitting of the turning of the piston 12 thereon.

I have provided various means for permitting of a rocking movement of the lever 9, attention being bad to Figs. 3, 4 and In Fig. 3 I have rounded the edges of the piston 12 asat 12, this of course permitting the piston 12 to assume an inclined position within the cylindero when the outer end of the rod 9 is rocked. In Fig: 4 I permit of this movement taking place by means of forming rod 9 in two sections and connecting the two by pivotal connection 9. noticed that in thisfigure, I have shown my wheel in a position indicating the maximum weight. being exerted thereon and it will be noticed that the rod 9 has reached its limit of upwardmovement within the slot 2 and is engaged by the upper end thereof consequently causing an outward motion at the piston 12 and a consequential compression of the spring 6." r

p In Fig. 5 I have illustrated two modifica- It will be Patented Oct. 30, 1917.

.shape of a ball, and fit the same into tions, wherein the locking movement is provided for, without necessitating the provision of a pivot such as 9 in Fig. 1. In the modification a I leave my piston 12 with square edges such as are shown in Fig. 1-, but

make the piston oval shape and position the.

iication 7) 1 allow for this movement by making the piston 12 of relatively greater thickness providing therein the socket 12". 1 enlarge the lower end of the rod 9 into the the socket 1 3 of the piston. As in this case the conventional adjustment of the rod 9, so as to tension the spring 6 would not be practical, I make the rod 9 in'two parts and oppositely screw diread the ends thereof providing an interiorly screw threaded nut for engaging the same.

it will be understood that the invention is not necessarily limited to the various means for allowing the turning or swinging ot the rod 9, but that it is well within the scope of my, invention to provide numerous other means for the allowing of this motion.

Referring back to Figs. 1 and it will be noticed that around the outer rim 10 I have fixed a tire consisting of a filling mass 13 which is held in position by a cover 16, secured to the sides of the rim 10 by means of clamping bands 1%, which are tightened by means 01'' bolt 15. It will of course be understood that any convenient tire could be afilxed to this outside rim, or that a cushion tire may be entirely dispensed with, at the option of the user.

From the above description it will be seen that whenthe pressure is exerted downwardly upon the hub +2, the rim 10, or the outside cushioning agent 15 being in engagement with the ground, that the rim 1 will move downwardly with respect to the rim 10 consequently rocking the outer ends of the rods 9 which are secured to it by means of the pivots 11. In connection with this it *ill be noticed that side displacement of the rods 9 is prevented by reason of their outer ends projecting through the slots 2 formed in the band 2, which slots set as a guide. The casings 5 which are nearest the point of contact 01 the outer rim 10 with the ground, will naturally have pressure exerted upon the rods 9, causing a stretching of the spring 6 within the casing The casings 5 diametrically opposite to the first mentioned casings will have a pull exerted upon their rods 9, due to the greater distance between the rim 10 and the rim 1 conse- Gonies or this patent may be. obtained tor five cents each, by arlclr Washington, 1], 13'.

quently the pistons 12 will move upwardly in these casings, and as a result the springs 6 will be compressed. As atorestated and particularly as shown in Fig. the casings positioned more on the sides will have the ends of their rods 9 rocked, causing projecting or retracting of the pistons 12, according to whether the casing is positioned below or above the horizontal plane of the hub 4. 7

Having thus described my invention what I desire to claim is;

1. A. resilient wheel comprising, an inner wheel having a peripheral rim, a second rim normally concentric with the first, a series of radially disposed helical springs arranged within the inner rim, connecting rods pivotally secured to the outer rim and connecting the inner end of the springs thereto, means within each casingadapted to guide the inner end of the spring in a radial direction only and means secured to the inner rim to allow or" the rocking of the said rod in a plane vertical to the wheel only, the whole being constructed in such a manner as to allow of the rods assuming an inclined position within the casing.

2-. A resilient wheel comprising, an inner wheel having a peripheral rim, a second rim, a series of radially disposed casings around and within said rims, helical springs within said casing whose outer ends are attached thereto, connecting rods pivotally secured to the outer rim, members pivotally secured to said rods at their inner ends to which the inner ends of said springs are connected, said members having, slidable movement within said casing.

3. A resilient wheel comprising an inner wheel having a peripheral rim, a second rim,

provided with an encircling band formed with openings therein, a series of radially disposed casings around and within said rims and having their upper ends inalinement with the openings in the band, such upper ends being of larger diameter than the openings in the bands, helical springs within said casings whose outer ends are prevented from moving outwardly by engagement with the said bands, connecting rods pivotally connected to the outer rim, the opposite ends of said rods being secured to members holding the inner end of said spring, the whole being constructed in such a manner as to permit of a'rocking movement of said rods within the casings.

In testimony whereof I affix my signature in the presence of two witnesses.

CORNELIS DOMINICUS, JR. lVitnesses:

H. Jonnrrsnan,

D. C. GnnNs.

l easing the ommissioner of Patents 

